Synthesis, characterization and photoactivity of bi-crystalline mesoporous TiO2
Dongthanh NGUYEN, Wei WANG, Haibo LONG, Hongqiang RU
Synthesis, characterization and photoactivity of bi-crystalline mesoporous TiO2
Mesoporous titania (meso-TiO2) has received extensive attention owing to its versatile potential applications. This paper reports a low-temperature templating approach for the fabrication of meso-TiO2 using the peroxo titanic acid (PTA) sol as precursor and Pluronic P123 as nonionic template. The TGA, XRD, N2 sorption, FE-SEM and HRTEM were used to characterize the obtained samples. The results showed that meso-TiO2 with high surface area up to 163 m2·g--1 and large pore volume of 0.65 cm3·g--1 can be obtained. The mesopore sizes can be varied between 13 and 20 nm via this synthesis approach. The amount of P123 and the calcination conditions were found to have great influence on the mesoporous and crystalline structures of meso-TiO2. The photocatalytic activity testing clearly shows that the high surface area and bi-crystallinity phases of meso-TiO2 play important roles in enhancing photocatalytic properties of meso-TiO2 in photo-decomposing Rhodamine B in water.
surfactant templating / mesopore / bi-crystallinity / titania
[1] |
Boettcher S W, Fan J, Tsung C K,
|
[2] |
Li W, Wu Z, Wang J,
|
[3] |
Zhang R, Elzatahry A A, Al-Deyab S S,
|
[4] |
Pan J H, Dou H, Xiong Z,
|
[5] |
Oveisi H, Suzuki N, Beitollahi A,
|
[6] |
Samiee L, Beitollahi A, Vinu A. Effect of calcination atmosphere on the structure and photocatalytic properties of titania mesoporous powder. Research on Chemical Intermediates, 2012, 38(7): 1467–1482
|
[7] |
Shamaila S, Sajjad A K L, Chen F,
|
[8] |
Renuka N K, Praveen A K, Aravindakshan K K. Synthesis and characterisation of mesoporous anatase TiO2 with highly crystalline framework. Materials Letters, 2013, 91: 118–120
|
[9] |
Chang Y S, Lee Y C, Yuhara J,
|
[10] |
Chu S, Luo L L, Yang J C,
|
[11] |
Xu J H, Dai W L, Li J X,
|
[12] |
Mohamed M M, Bayoumy W A, Khairy M,
|
[13] |
Dong Q, Su H L, Zhang D,
|
[14] |
Chen L, Yao B D, Cao Y,
|
[15] |
Tian C X, Yang Y, Pu H. Effect of calcination temperature on porous titania prepared from industrial titanyl sulfate solution. Applied Surface Science, 2011, 257(20): 8391–8395
|
[16] |
Baiju K V, Periyat P, Shajesh P,
|
[17] |
Shibata H, Mihara H, Mukai T,
|
[18] |
Tian C X, Zhang Z, Hou J,
|
[19] |
Shibata H, Ogura T, Mukai T,
|
[20] |
Song H, Chen T, Sun Y,
|
[21] |
Tang H, Zhang D, Tang G G,
|
[22] |
Ge L, Xu M X. Fabrication and characterization of TiO2 photocatalytic thin film prepared from peroxo titanic acid sol. Journal of Sol-Gel Science and Technology, 2007, 43(1): 1–7
|
[23] |
Lee C K, Kim D K, Lee J H,
|
[24] |
Kim G H, Lee C G, Kim I. Properties of TiO2 film prepared from titanium tetrachloride. Metals and Materials International, 2004, 10(5): 423–427
|
[25] |
Sasirekha N, Rajesh B, Chen Y W. Synthesis of TiO2 sol in a neutral solution using TiCl4 as a precursor and H2O2 as an oxidizing agent. Thin Solid Films, 2009, 518(1): 43–48
|
[26] |
Liu Y J, Aizawa M, Wang Z M,
|
[27] |
Zakharova G S, Andreikov E I. Effect of the precursor heat treatment procedure on the properties of titania photocatalysts. Inorganic Materials, 2012, 48(7): 727–731
|
[28] |
Wang W, Nguyen D T, Long H B,
|
[29] |
Wan Y, Zhao D. On the controllable soft-templating approach to mesoporous silicates. Chemical Reviews, 2007, 107(7): 2821–2860
|
[30] |
Wan Y, Shi Y, Zhao D. Designed synthesis of mesoporous solids via nonionic-surfactant-templating approach. Chemical Communications, 2007, (9): 897–926
|
[31] |
Wang W, Qi H, Long H,
|
[32] |
Wang W, Shan W J, Ru H Q,
|
[33] |
Zhang H, Banfield J F. Understanding polymorphic phase transformation behavior during growth of nanocrystalline aggregates: Insights from TiO2. The Journal of Physical Chemistry B, 2000, 104(15): 3481–3487
|
[34] |
Wanka G, Hoffmann H, Ulbricht W. Phase diagrams and aggregation behavior of poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) triblock copolymers in aqueous solutions. Macromolecules, 1994, 27(15): 4145–4159
|
[35] |
Yamada S, Wang Z, Mouri E,
|
[36] |
Bacsa R R, Kiwi J. Effect of rutile phase on the photocatalytic properties of nanocrystalline titania during the degradation of p-coumaric acid. Applied Catalysis B: Environmental, 1998, 16(1): 19–29
|
[37] |
Bakardjieva S, Šubrt J, Štengl V,
|
[38] |
Ohno T, Tokieda K, Higashida S,
|
[39] |
Yan M, Chen F, Zhang J,
|
/
〈 | 〉 |